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You isolate a strand of a section of DNA which reads:

5'-GATGGTAGCCTACCCATAGG-3'
Suppose that an mRAN is transcribed to this DNA using the strand as a template. what is the amino acid sequence of the protein translated from this sequence?
a)MVAYP
b)MVATP
c)DYAVM
d)DTAVM
e)DMVAY

User Stig Husby
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1 Answer

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Final answer:

The DNA strand 5'-GATGGTAGCCTACCCATAGG-3' is transcribed into mRNA as 3'-CUACCAUCGGAUGGGUAUC-5', which is then translated into the amino acid sequence Leu-Pro-Ser-Asp-Gly-Tyr. None of the given options in the question match this sequence.

Step-by-step explanation:

To solve this question, we first need to transcribe the given DNA strand into its complementary messenger RNA (mRNA) sequence, and then translate that mRNA into an amino acid sequence to determine the resulting protein. The given DNA strand is:
5'-GATGGTAGCCTACCCATAGG-3'.

To transcribe this into mRNA, we use the complementary RNA nucleotides: adenine (A) pairs with uracil (U), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C). Therefore, the mRNA sequence transcribed using this DNA strand as a template will be:
3'-CUACC AUCGGA UGGGU AUC -5'.

Next, we need to translate this mRNA sequence into an amino acid sequence using the genetic code. We read the mRNA in triplets, called codons, each of which corresponds to a specific amino acid. The resulting amino acid sequence, from N-terminus to C-terminus (starting to ending amino acids), will be:

  • CUA - Leu (L)
  • CCA - Pro (P)
  • UCG - Ser (S)
  • GAU - Asp (D)
  • GGG - Gly (G)
  • UAC - Tyr (Y)

If we look at the options given in the question, none match the amino acid sequence we have deciphered. Thus, there might be a misunderstanding in the question, or the options provided do not include the correct answer. The proper protein sequence according to the mRNA transcribed would be Leu-Pro-Ser-Asp-Gly-Tyr based on standard genetic coding.

User Thanushka
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